Get value from hidden field of ASP.Net in Javascript.

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How to get value from a hidden field from javascript.
I m using the below code to do this but getting error:-

JavaScript

var digiclock = document.getElementById("<%= HiddenFieldMinutes.ClientID %>").value;

I m getting this error message : Unable to get value of the property 'value': object is null or undefined

Please guide me that how i get value from this hidden field in JavaScript.

Posted 10-Jul-12 23:28pm

Dharmenrda Kumar Singh

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pradiprenushe 11-Jul-12 5:34am

Check these cases:
1. Check hidden field present
2. Check hidden field container, whether it is inside some other control

4 solutions

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NothingToLoose · Answer 1 · 2012-07-25T22:22:00

Solution 4

Rewrite your statement in following way...

C#

if($find("<%=HiddenFieldMinutes.ClientID%>")== null)
    alert('Hidden Field is not found');
else
var digiclock = $get('<%= HiddenFieldMinutes.ClientID %>').value;

Posted 25-Jul-12 22:22pm

NothingToLoose

kimberly wind · Answer 2 · 2012-07-10T23:36:00

http://www.mkyong.com/javascript/how-to-get-hidden-field-value-in-javascript/[^]
http://www.developerfusion.com/thread/53365/how-to-assign-a-value-to-hidden-field-using-javascript-in-aspnet/[^]
http://stackoverflow.com/questions/331599/using-javascript-to-set-value-of-hidden-field-then-access-value-from-serverside[^]

check this links

_Amy · Answer 3 · 2012-07-10T23:45:00

Hi,
You have to check the following:
1. Check hidden field present.
2. Whether you are writing javascript in separate JS file.
If you are are writing javascript in separate JS file then you cannot get client id directly there.

Just follow the steps:
1. Add the attribute in page load for hidden field.

C#

YourBtn.Attributes.Add("onclick", "return YourFunction('" + HiddenFieldMinutes.ClientID + "')");

2. write the javascript function as follows:

JavaScript

function test(HdnFldID) {
   var digiclock = document.getElementById(HdnFldID).value;
}

All the best.
--Amit

Kamlesh Kumar Tiwari · Answer 4 · 2012-07-10T23:45:00

Solution 3

Use below format for getting the value of Hidden field

var digiclock = document.getElementById('HiddenFieldMinutes').value

Posted 10-Jul-12 23:45pm

Kamlesh Kumar Tiwari

Get value from hidden field of ASP.Net in Javascript.

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